Jone Peter Reistad
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View article: New technique for aurora / dayglow separation in UV imagery: IMF B <sub>y</sub> dependence of seasonal differences in auroral oval location
New technique for aurora / dayglow separation in UV imagery: IMF B <sub>y</sub> dependence of seasonal differences in auroral oval location Open
We investigate how the location, size, and intensity of the auroral oval is affected by the combination of a strong dawn/dusk component of the interplanetary magnetic field (IMF By ) during northward IMF and the tilt of the Earth's magneti…
View article: Predictors of Substorm Onset Conjugate Displacement
Predictors of Substorm Onset Conjugate Displacement Open
Using a substorm onset list from the Imager for Magnetopause to Aurora Global Exploration (IMAGE) and Polar satellite images, we have constructed a new database of the times and locations of 63 substorm onsets observed in both hemispheres.…
View article: Predictors of Substorm Onset Conjugate Displacement
Predictors of Substorm Onset Conjugate Displacement Open
View article: How Do Substorms Influence Hemispheric Asymmetries in Equivalent Currents?
How Do Substorms Influence Hemispheric Asymmetries in Equivalent Currents? Open
Ionospheric dynamics exhibits a distinct hemispheric asymmetry, influenced primarily by the Interplanetary Magnetic Field (IMF) B y component, dipole tilt, or a combination of both. Previous studies have indicated a reduction in these asym…
View article: Volumetric Reconstruction of Ionospheric Electric Currents From Tri‐Static Incoherent Scatter Radar Measurements
Volumetric Reconstruction of Ionospheric Electric Currents From Tri‐Static Incoherent Scatter Radar Measurements Open
We present a new technique for the upcoming tri‐static incoherent scatter radar system EISCAT 3D (E3D) to perform a volumetric reconstruction of the 3D ionospheric electric current density vector field, focusing on the feasibility of the E…
View article: The Ionospheric Leg of the Substorm Current Wedge: Combining Iridium and Ground Magnetometers
The Ionospheric Leg of the Substorm Current Wedge: Combining Iridium and Ground Magnetometers Open
Utilizing magnetic field measurements made by the Iridium satellites and by ground magnetometers in North America we calculate the full ionospheric current system and investigate the substorm current wedge. The current estimates are indepe…
View article: How the Ionosphere Responds Dynamically to Magnetospheric Forcing
How the Ionosphere Responds Dynamically to Magnetospheric Forcing Open
Ground magnetic field variations have been used to investigate ionospheric dynamics for more than a century. They are usually explained in terms of an electric circuit in the ionosphere driven by an electric field, but this is insufficient…
View article: Does high-latitude ionospheric electrodynamics exhibit hemispheric mirror symmetry?
Does high-latitude ionospheric electrodynamics exhibit hemispheric mirror symmetry? Open
Ionospheric electrodynamics is a problem of mechanical stress balance mediated by electromagnetic forces. Joule heating (the total rate of frictional heating of thermospheric gases and ionospheric plasma) and ionospheric Hall and Pedersen …
View article: A Quantitative Analysis of the Uncertainties on Reconnection Electric Field Estimates Using Ionospheric Measurements
A Quantitative Analysis of the Uncertainties on Reconnection Electric Field Estimates Using Ionospheric Measurements Open
Calculating the magnetic flux transfer across the open‐closed boundary (OCB) per unit time and distance—the reconnection electric field—is an important means of remotely monitoring magnetospheric dynamics. Ground‐based measurements of plas…
View article: Estimating the Ionospheric Induction Electric Field Using Ground Magnetometers
Estimating the Ionospheric Induction Electric Field Using Ground Magnetometers Open
The ionospheric convection electric field is often assumed to be a potential field. This assumption is not always valid, especially when the ionosphere changes on short time scales min. We present a technique for estimating the induction e…
View article: Volumetric reconstruction of ionospheric electric currents from tri-static incoherent scatter radar measurements
Volumetric reconstruction of ionospheric electric currents from tri-static incoherent scatter radar measurements Open
We present a new technique for the upcoming tri-static incoherent scatter radar system EISCAT 3D (E3D) to perform a volumetric reconstruction of the 3D ionospheric electric current density vector field, focusing on the feasibility of the E…
View article: A Comparison of Auroral Oval Proxies With the Boundaries of the Auroral Electrojets
A Comparison of Auroral Oval Proxies With the Boundaries of the Auroral Electrojets Open
The boundaries of the auroral oval and auroral electrojets are an important source of information for understanding the coupling between the solar wind and the near‐earth plasma environment. Of these two types of boundaries the auroral ele…
View article: Robust Estimates of Spatiotemporal Variations in the Auroral Boundaries Derived From Global UV Imaging
Robust Estimates of Spatiotemporal Variations in the Auroral Boundaries Derived From Global UV Imaging Open
The aurora often appears as an approximately oval shape surrounding the magnetic poles, and is a visible manifestation of the intricate coupling between the Earth's upper atmosphere and the near‐Earth space environment. While the average s…
View article: High time resolution mapping of polar ionospheric flows with the SuperDARN Borealis systems
High time resolution mapping of polar ionospheric flows with the SuperDARN Borealis systems Open
Over the last few years, the five SuperDARN HF ionospheric radars operated by the University of Saskatchewan have been upgraded to digital systems that utilise the flexibility and reliability of software defined radios (SDRs). SDRs allow f…
View article: Occurrence Probability of Magnetic Field Disturbances Measured With Swarm: Mapping the Dynamic Magnetosphere‐Ionosphere Coupling
Occurrence Probability of Magnetic Field Disturbances Measured With Swarm: Mapping the Dynamic Magnetosphere‐Ionosphere Coupling Open
The exchange of kinetic and electromagnetic energy by precipitation and/or outflow and through field‐aligned currents are two aspects of the ionosphere‐magnetosphere coupling. A thorough investigation of these processes is required to bett…
View article: GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D
GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D Open
This dataset is used as a "ground truth" for investigating the performance of a volumetric reconstruction technique of electric current densities, intended to be applied to the EISCAT 3D radar system. The technique is outlined in a mnuscri…
View article: GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D
GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D Open
This dataset is used as a "ground truth" for investigating the performance of a volumetric reconstruction technique of electric current densities, intended to be applied to the EISCAT 3D radar system. The technique is outlined in a mnuscri…
View article: GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D
GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D Open
<p>This dataset is used as a "ground truth" for investigating the performance of a volumetric reconstruction technique of electric current densities, intended to be applied to the EISCAT 3D radar system. The technique is outlined in …
View article: GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D
GEMINI output used to develop volumetric reconstruction technique for EISCAT 3D Open
<p>This dataset is used as a "ground truth" for investigating the performance of a volumetric reconstruction technique of electric current densities, intended to be applied to the EISCAT 3D radar system. The technique is outlined in …
View article: The Ionospheric Leg of the Substorm Current Wedge: Combining Iridium and Ground Magnetometers
The Ionospheric Leg of the Substorm Current Wedge: Combining Iridium and Ground Magnetometers Open
Utilising magnetic field measurements made by the Iridium satellites and by ground magnetometers in North America we calculate the full ionospheric current system and investigate the substorm current wedge. The current estimates are indepe…
View article: A comparison of auroral oval proxies with the boundaries of the auroral electrojets
A comparison of auroral oval proxies with the boundaries of the auroral electrojets Open
The boundaries of the auroral oval and auroral electrojets are an important source of information for understanding the coupling between the solar wind and the near-earth plasma environment. Of these two types of boundaries the auroral ele…
View article: Occurrence probability of magnetic field disturbances measured with Swarm: Mapping the dynamic magnetosphere-ionosphere coupling
Occurrence probability of magnetic field disturbances measured with Swarm: Mapping the dynamic magnetosphere-ionosphere coupling Open
The exchange of kinetic and electromagnetic energy by precipitation and/or outflow, and through field-aligned currents are two aspects of the ionosphere-magnetosphere coupling. A thorough investigation of these processes is required to bet…
View article: Does high-latitude ionospheric electrodynamics exhibit hemispheric mirror symmetry?
Does high-latitude ionospheric electrodynamics exhibit hemispheric mirror symmetry? Open
Ionospheric electrodynamics is a problem of mechanical stress balance mediated by electromagnetic forces. Joule heating (the total rate of frictional heating of thermospheric gases and ionospheric plasma) and ionospheric Hall and Pedersen …
View article: A comparison of auroral oval proxies with the boundaries of the auroral electrojets
A comparison of auroral oval proxies with the boundaries of the auroral electrojets Open
This is a dataset of electrojet boundaries found along the 105° magnetic meridan. The algorithm is explained in a paper currently in the submission stage, with the same title as this dataset, along with the presentation and investigation o…
View article: Substorm Impact on Dayside Ionospheric Currents
Substorm Impact on Dayside Ionospheric Currents Open
Ionospheric dayside dynamics is strongly controlled by the interaction between the Interplanetary Magnetic Field (IMF) and the Earth's magnetic field near the dayside magnetopause, while nightside ionospheric dynamics depends mainly on mag…
View article: Background removal from global auroral images: Data-driven dayglow modeling
Background removal from global auroral images: Data-driven dayglow modeling Open
Global images of auroras obtained by cameras on spacecraft are a key tool for studying the near-Earth environment. However, the cameras are sensitive not only to auroral emissions produced by precipitating particles, but also to dayglow em…
View article: Auroral Oval Morphology: Dawn‐Dusk Asymmetry Partially Induced by Earth's Rotation
Auroral Oval Morphology: Dawn‐Dusk Asymmetry Partially Induced by Earth's Rotation Open
The auroral oval morphology has been investigated in previous studies presenting maps of average auroral precipitation. However, such distributions tend to emphasize auroral intensity rather than the actual extent of the auroral oval. We d…
View article: Spatial Resolution in Inverse Problems: The EZIE Satellite Mission
Spatial Resolution in Inverse Problems: The EZIE Satellite Mission Open
Inverse modeling has become one of the primary methods for studying ionospheric electrodynamics, especially when using magnetic field measurements from below the ionosphere. We present a method for quantifying the spatial resolution in an …
View article: Editorial: Understanding the causes of asymmetries in Earth’s magnetosphere-ionosphere system
Editorial: Understanding the causes of asymmetries in Earth’s magnetosphere-ionosphere system Open
EDITORIAL article Front. Astron. Space Sci., 28 March 2023Sec. Space Physics Volume 10 - 2023 | https://doi.org/10.3389/fspas.2023.1173630
View article: Auroral oval identification based on Swarm magnetometer data
Auroral oval identification based on Swarm magnetometer data Open
Following the work done with the DMSP spectrometer data to derive the auroral occurrence probability in all covered MLat-MLT sectors above 50 degrees MLat (Decotte et al. 2023), here we use the Swarm magnetometer data to extract the probab…